1st Orenburg Cossack Regiment

The 1st Orenburg Cossack Regiment was a cossack regiment of the Imperial Russian Army which served in World War I. Raised from the Orenburg Host, the regiment was one of 6 Orenburg Cossack regiments which fought in the war. During the Russian Civil War, the Red Army created the "1st Orenburg Cossack Socialist Regiment", which served in Ural in 1918.